# US 11,306,737 B2 · Inflator with an air guiding sleeve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,306,737 B2 - Document ID: US11306737B2 - Status: Granted - Kind: B2 - Application number: 17/247,042 - Filed: 2020-11-24 - Published: 2021-03-18 - Granted: 2022-04-19 - Earliest claimed: 2018-08-16 - Assignees: Dongguan Richtek Electronics Co., Ltd. - Applicants: Dongguan Richtek Electronics Co., Ltd. - Inventors: Ken Yang - Web page: https://patentgrep.com/patent/US11306737B2 ## CPC - F04D 29/5806: {Cooling the drive system} - F04D 29/582: {specially adapted for elastic fluid pumps} - F04B 35/04: the means being electric - F04B 39/066: {Cooling by ventilation} - F04B 39/121: {Casings} - F04D 25/06: the pump being electrically driven (F04D25/08 takes precedence) - F04D 25/08: the working fluid being air, e.g. for ventilation - F04D 29/403: {especially adapted for elastic fluid pumps} - F04D 29/584: {cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence)} - H02K 9/06: with fans or impellers driven by the machine shaft - B60S 5/046: {using electrical or electronical means} - F04B 35/06: Mobile combinations - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR ## Abstract An inflator with an air guiding sleeve includes a chassis, a core and a drive motor installed in the chassis, an air guiding sleeve and a cooling fan. The air guiding sleeve has an air guiding hole penetrating through the air guiding sleeve. The drive motor includes a main body and a shaft rotatably installed to the main body, and the shaft has an end protruded from the main body and provided for driving the core to move and the other end protruded from the main body and provided for connecting the cooling fan. The air guiding sleeve includes a positioning shell and an air guiding ring connected to the positioning shell, and the positioning shell is installed to the chassis and/or the drive motor, and the air guiding ring is sheathed onto the external side of the cooling fan and installed around the cooling fan. ## Claims ### Claim 1 An inflator with an air guiding sleeve, comprising: a chassis, and a core and a drive motor installed in the chassis, and the drive motor being provided for driving the core to inflate an external object, characterized in that the inflator further comprises the air guiding sleeve and a cooling fan, and the air guiding sleeve has an air guiding hole penetrating through the air guiding sleeve, and the drive motor comprises a main body and a shaft rotatably installed to the main body, and the shaft has an end protruded from the main body for driving the core to move, and the another end protruded from the main body for coupling the cooling fan, air and the guiding sleeve includes a positioning shell and an air guiding ring coupled to the positioning shell, and the positioning shell is installed to the chassis and/or the drive motor, and an external surface of the positioning shell abuts against the chassis, and the air guiding ring encloses the cooling fan, and the core is detachably coupled to the chassis; and the positioning shell has a notch concavely formed at an end of the positioning shell away from the air guiding ring; and the positioning shell has a cross-sectional area in an octagonal shape, and the air guiding ring has a cross-sectional area in a circular shape, and the positioning shell cross-sectional area is greater than the cross-sectional area of the air guiding ring. ### Claim 2 (depends on 1) The inflator with the air guiding sleeve according to claim 1, further comprising a fixing ring sheathed onto an external side of the drive motor, and an air gap being formed between the drive motor and the chassis; and two lugs convexly formed at opposing sides of the fixing ring and extending away from one another, and the two lugs being coupled to the chassis. ### Claim 3 (depends on 2) The inflator with the air guiding sleeve according to claim 2, wherein one of the lugs has a limiting bump, and the chassis has a limiting groove for receiving the limiting bump. ### Claim 4 (depends on 2) The inflator with the air guiding sleeve according to claim 2, wherein the drive motor has a circular blind slot concavely formed on the external side of the drive motor, and the fixing ring is received into the circular blind slot. ### Claim 5 (depends on 4) The inflator with the air guiding sleeve according to claim 4, wherein the drive motor has an anti-rotation slot communicated with the circular blind slot, and the fixing ring has an anti-rotation plate, and the anti-rotation plate and the lug extend into the anti-rotation slot. ### Claim 6 (depends on 1) The inflator with the air guiding sleeve according to claim 1, wherein the chassis has an air inlet hole and an air outlet hole communicated with the air inlet hole, and the core and the drive motor are disposed between the air inlet hole and the air outlet hole. ### Claim 7 (depends on 6) The inflator with the air guiding sleeve according to claim 6, wherein the drive motor has a vent communicated with the air outlet hole. ### Claim 8 (depends on 1) The inflator with the air guiding sleeve according to claim 1, wherein the positioning shell and the air guiding ring are integrally formed.